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An Extra X or Y Chromosome: Contrasting the Cognitive and Motor Phenotypes in Childhood in Boys with 47,XYY Syndrome or 47,XXY Klinefelter Syndrome
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Ross, Judith L.; Zeger, Martha P. D.; Kushner, Harvey; Zinn, Andrew R.; Roeltgen, David P. – Developmental Disabilities Research Reviews, 2009
Objective: The goal of this study was to contrast the cognitive phenotypes in boys with 47,XYY (XYY) karyotype and boys with 47,XXY karyotype [Klinefelter syndrome, (KS)], who share an extra copy of the X-Y pseudoautosomal region but differ in their dosage of strictly sex-linked genes. Methods: Neuropsychological evaluation of general cognitive…
Descriptors: Genetic Disorders, Males, Sex, Genetics
Cognitive and Behavioral Characteristics of Physically Abused Children.
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Friedrich, William N.; And Others – Journal of Consulting and Clinical Psychology, 1983
Compared physically abused male preschoolers (N=11) with nonabused matched controls on the McCarthy Scales of Children's Abilities and the Wide Range Achievement Test. Significant differences were found on the Verbal and Memory Scales and the General Cognitive Index of the McCarthy. No behavioral differences were noted. (Author/JAC)
Descriptors: Behavior Patterns, Child Abuse, Cognitive Processes, Cohort Analysis